2. Snails are called "snails" and originated in the Sui Dynasty. Especially during the reign of Yang Di in Sui Dynasty, Yang Guang happened to meet Wu Jiangxian when he visited Jiangnan. Among these 15-and 16-year-old girls, Yang Di took a fancy to Wu Jiangxian at the first sight because she had a moth eyebrow. She immediately took Wu into the palace, named her Mrs. Kongtong, and liked her very much.
3. Because the emperor loved her moth eyebrows, he specially used the snail tribute from Persians to make her thrush. When the Sui Dynasty had just established its capital and the economy was not particularly developed, other guests used bronze Dai, while Wujiang Xian used a priceless spiral Dai.
Therefore, the priceless mother-of-pearl became a symbol that the emperor loved his concubine. Later, qualified women in ancient times were also the first to snap up mother-of-pearl and cosmetics brought by Persian merchants. Ouyang Xiu, a poet in the Song Dynasty, said that "shallow snail Dai, lightly swallowing fat, and loose makeup are the second best", which further explained the modification of snail Dai on women's makeup.